Samsung Galaxy notifications delayed? 6 fixes

By Saadat Rafiq · 2 min read · 6 steps · Updated 5 October 2026 · ▶ Video demo

Device

Android

Shown on

Samsung Galaxy A57 5G (SM-A576B), One UI 8.5, Android 16

App

Settings

Real screenshots

5 of 6 steps

Checked

October 2026

Sources

2 official, linked below

Step by step

1. 

   Check Deep sleeping apps

   Settings, Battery, Background usage limits. The number next to Deep sleeping apps shows how many apps never run in the background. Ours had 6, all added by the phone itself.

   Done

2. 

   Take the app out of the list

   Open Deep sleeping apps (and Sleeping apps), find the late app, touch and hold it and tap Remove.

   Done

3. 

   Add it to Never auto sleeping apps

   Apps in this list are never put to sleep. Add every app whose messages must arrive on time.

   Done

4. 

   Or stop putting apps to sleep

   Put unused apps to sleep sends apps you have not opened for a while to sleep. Switching it off helps every app, at some cost to battery life. It was on on our phone.

   Done

5. Turn off Power saving

   Power saving limits background activity, so notifications can wait until you open the app. Swipe down from the top right and tap Power saving off.

   Done

6. 

   Check the app's notification settings

   Settings, Notifications, App notifications, then the app. Allow notifications must be on, and the Lock screen and Notification pop-up boxes must be ticked if you want to see them there.

   Done

About this guide

When messages only arrive once you open the app, the phone has usually put the app to sleep to save battery. Sleeping apps cannot check for new messages in the background.

The screenshots are from a Samsung Galaxy A57 5G with One UI 8.5 and Android 16. Other Galaxy phones on One UI 8 use the same menus; on older One UI versions a few names and positions differ. The app lists are blurred. We only looked at these screens on our phone and changed nothing.

Good to know

Notifications not arriving at all? Samsung Galaxy notifications not showing? 5 settings to check.

More about the sleep lists: how to put apps to sleep on a Samsung Galaxy phone.

In short: Background usage limits: out of the sleep lists, into Never auto sleeping apps, or Put unused apps to sleep off; Power saving off; app notifications on.